﻿
/*
毕老师用电脑上课。

开始思考上课中出现的问题。


比如问题是
	电脑蓝屏。
	电脑冒烟。

要对问题进行描述，封装成对象。


可是当冒烟发生后，出现讲课进度无法继续。

出现了讲师的问题：课时计划无法完成。


*/

class LanPingException extends Exception
{
	LanPingException(String message)
	{
		super(message);
	}
}

class MaoYanException extends Exception
{
	MaoYanException(String message)
	{
		super(message);
	}
}


class NoPlanException extends Exception
{
	NoPlanException(String msg)
	{
		super(msg);
	}
}

class Computer
{
	private int state = 3;
	public void run()throws LanPingException,MaoYanException
	{
		if(state==2)
			throw new LanPingException("蓝屏了");
		if(state==3)
			throw new MaoYanException("冒烟了");

		System.out.println("电脑运行");
	}
	public void reset()
	{
		state = 1;
		System.out.println("电脑重启");
		
	}
}

class Teacher
{
	private String name;
	private Computer cmpt;

	Teacher(String name)
	{
		this.name = name;
		cmpt = new Computer();

	}

	public void prelect()throws NoPlanException
	{
		try
		{
			cmpt.run();			
		}
		catch (LanPingException e)
		{
			cmpt.reset();
		}
		catch (MaoYanException e)
		{
			
			test();
			throw new NoPlanException("课时无法继续"+e.getMessage());
			
		}
		System.out.println("讲课");
	}
	public void test()
	{
		System.out.println("练习");
	}

}



class ExceptionTest 
{
	public static void main(String[] args) 
	{
		Teacher t = new Teacher("毕老师");
		try
		{
			t.prelect();
		}
		catch (NoPlanException e)
		{
			System.out.println(e.toString());
			System.out.println("换老师或者放假");
		}
		
	}
}
